Elevator drive mechanism.



s 13. HART. ELEVATOR DRIVE MECHANISM.

APPLICATION FILED JUHHM, 1905.-

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UNITED STATES PATENT OFFICE.

STACY B. HART, .QF PEORIA, ILLINOIS,. ASSIGNOR TO HART GRAIN WEIGHER' 60., or rEoRrA,

ILLIN 018.

ILLINOIS, A CORPORATION- OF E L E-VATO R DRIV E MECHANISM Patented Oct. 16', 1906.

Application filed June 14, 1905. Serial No. 265,1:tt.

To aZZ'whom it may an0erw- I Be it known that I, STACY B. HART, a citizen of the United?-States,,residing at Peoria, in the county'of Peoria, and State of Illinois, have invented certain new and useful Improvements in Elevator Drive Mechanism; and I do; hereby declare-that thefollowing is a full, clear, and; exact description-ofthe-invention, which will, enable-others. skilled in the: art to which it appertains to make and use the same.

This invention has reference more par-- ticularly to. power-transmitting mechanism for connecting: a rotary member of anelevae tor with the auger of an auger conveyer communicating-therewith; and the object which the auger, so that variations in thealineinent of the said elevator member and auger will not affect the transmission of power from one to the other.

A further object of my invention is topror vide an extension for the auger for conveying the material in the auger conveyer nearer to the elevator-boot, if desired.

In the accompanying drawings, which illustrate my invention, and in which similar reference characters indicate similar parts, in the several views, Figure 1 is .a vertical sectional view of-the lower part or boot of a grain-elevator and. the adjacent parts of a threshing-machine, employed to connect a power-driven: auger in, a grain-receptacle; of the threshing chine with the lower sprocket of the elevator; Fig; 2, a horizontal sectional view. of a portion of Fig. 1 on the line a; a thereof; Fig. '3, a vertical sectional, view of the lower portion orboot of theelevator on theline bb of Fig. 2 looking; in the direction indicated, by the arrow. Fig. 4 shows the elevatorsprocket and a portion of the auger with their axes of rotation Z/ 1 and w :12, respectively, considerably out of alinement, and illustrates the manner in which the connection herein described. adapts itself to the variable alinement of said parts. This figure further shows an extension for the auger, which may be used to increase the effectivelength thereof 125nd convey the grainnearer toithei elevatoroot.

1 represents a grain-receptacle of a threshing-machine, and 2 an auger j ournaled therewherein my invention is;

knuckle-joint is connected by the in atv intervals by means of the brackets 3,,

which said auger during the, operation of the threshing-machine isrOtated, so as'to conveyv the grain, that is received'in one end thereof, from whence it is discharged 1 intothe lower part or boot 4 of an, elevator.- fThis elevator, as can be the drawings; is detachably fastened to the outlet end of the receptacle 1, and when the elevator is operated from the auger in thereocptacle, which is a; common practice, it is lnecessary toprovide such a connection be tween the auger and the driven member of theelevator, so-that the operation-is not affect ed by inaccurate adjustment; of the elevator onthe outlet end of the auger-receptacle-l'.

I have in view is to provide means for de tachably connecting the elevator member to Heretofore it has been thecustom tosecurethe lower sprocket of'theelevator on a :sleeve that telescoped the end, of'the augerstem, so that the sprocket rotatedintheboot lndependent of any connection therewith, and

consequently the inaccurate adjustment of i the elevator would be less liableto affect the operation.

This construction, however,,has been found to: possess some very material. disadvantages, which my invention is designed to obviate.

In my construction I fix in the'boot 4 of the elevator and in approximate alinement with theauger-stem 5 thestub-axle 6, upon which ismounted thelower sprocket 7 of the elevator, which said sprocket, together with the-uppersprocket of the elevator, carries the chain 8, upon which arefastened the flights9 which travel in the elevator-tubes, 10.

, Connecting the sprocket 7 to the augerstem 5 is a flexible or compensating connection constructed as follows: On that face. of

the sprocket 7 nearest toithe end of. the augerstem 5 is a knuckle-joint 11, which said av second knuckle-joint 13 on the end of the sleeve 14. This sleeve isadapted to tele scope the end of the auger-stem 5, as shown,

and issecured thereon by means of the set-- screw 15. This connection, as can be seen, will permit of the axes of rotation of the sprocket 7 and the auger-stem 5 being considerably out of line and adjusts itselfto the variable alinement of the parts which it connects without affecting the transmission of rotation from one to the other.

the receptacle to seen by reference to links 12 to- In attaching elevators to threshing-ma-- chines it is often desirable to increase the eflective length of the auger, so as to convey the deposit in the auger-receptacle nearer "to the boot of the elevator. This may be accomplished by providing the sleeve 14 (lengthened, if necessary) with a flight or vane 1 6, inclined similarly to the flights of the auger 2. This flight or vane 16 on the sleeve 14 forms a prolongation of the flight of the auger 2 and can be made to carry the grain as close to the boot of the elevator as is desired.

The advantages which my invention possesses over the constructions heretofore used result from the fact that the sprocket 7 is permanently placed in the elevator-boot and does not have to be changed or adjusted whenever the elevator is removed, and the frequent troublesome and diflicult removal and replacing of the sprocket and the consequent adjusting of the chain which carries the elevator-flights is done away with. In the constructions heretofore used when the elevator was detached the chain which carried the flights often became tangled and wedged in the tubes, all of which disadvantages, as can be seen, are overcome by the use of my invention.

Although I have shown and described my invention in certain precise forms and as applied to a particular form of grain-elevator used in connection with a threshing-machine, I am aware that the same idea can be applied to advantage in various other constructions, in many of which'it will be necessary to modify the herein described and shown construction to suit the purposes for which it is adapted,- all of which different applications and modifications I contemplate.

Having thus fully described my invention, what I claim, and desire to secure by Letters Patent of the United States, is

1. In an elevator drive mechanism, the combination of an auger or screw conveyer, a rotary elevator member substantially in line with the anger or screw of the conveyer, and a multiple universal joint connecting the rotary elevator member with the said auger or screw.

2. In an elevator drive mechanism, the combination of a rotary elevator member with an endless bucket or flight carrier mounted thereon, a rotary conveyer member adjacent said elevator member, and a multiple universal joint connecting said elevator inember with the said rotary conveyer mem 3. In an elevator drive mechanism, the

' combination of an elevator,a conveyer-trough communicating with the elevator, an auger or screw journaled in the said conveyertrough, a rotary member in the elevator substantially in line with the auger or screw of the conveyer, and a multiple universal joint connecting the rotary elevator member with the auger or screw of the conveyer.

4. In an elevator drive mechanism, the combination of a sprocket mounted in and carried by the boot of the elevator, a rotary conveyer member adjacent the said sprocket, and a multiple universal joint connecting the said sprocket with the said rotary conveyer member.

5. The combination with an anger or screw conveyer, of an extension therefor comprising a sleeve telescopically mountedon the stem of the auger or screw, and a vane carried by said sleeve extending in a similar direction to the flights of the auger or screw. 6.7In an elevator drive mechanism, the combination of an anger or screw conveyer, an extension therefor, comprising a sleeve telescopically mounted on the stem of the auger or screw and a vane carried by said sleeve extending in asimilar direction to the flights of the auger, and a rotary elevator member connected to said sleeve.

7. In an elevator drive mechanism, the combination of an auger or screw conveyer providedwith a vane-carrying sleeve extension mounted on' the stem thereof, a rotary elevator member "and a multiple universal joint connecting said auger'or screw extension with said rotary elevator member.

8. In an elevator drive mechanism, the combination of an auger or screw conveyer provided with a vane-carrying sleeve extension mountedon'the. stem thereof, a rotary elevator member substantially in line with the auger or screw, and a multiple universal I joint connecting the said auger or screw extension with the said rotary elevator member.

9. The combination with a threshing-machine of a grainreceptacle, an auger journaled to operate in sa'id're'ceptacle, an elevator operating in conjunction with the grain-receptacle, and receiving the deposit from the grain-receptacle 1n the lower part or boot thereof, a drive-sprocket on a stub-axle in the boot of the elevator, around which said sprocket travels the chain by which the elevator-flights are carried, .a knuckle-joint on the said sprocket, an adjustable and detachable sleeve on the stem of the auger, a knucklejoint. on the said sleeve, and links connecting the said knuckle-joint of the sprocket and the said knuckle-joint of the sleeve, substantially as and for the purposes specified.

In testimony whereof I have aiflxed my signature in the presence of two witnesses.

JOHANNA E. DE VRIES, WALTER B. WILDE. 

